Home / 154,056.50-212,561.52-89,487.38

Finding the Fourth Proportional to 154,056.50, 212,561.52 and 89,487.38

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Solution

The fourth proportional to 154,056.50, 212,561.52 and 89,487.38 is: 123,471.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,056.50 : 212,561.52 = 89,487.38 : x
  2. Step 2: Convert to fraction form
    154,056.50/212,561.52 = 89,487.38/x
  3. Step 3: Cross multiply
    154,056.50x = 212,561.52 × 89,487.38
  4. Step 4: Simplify right side
    154,056.50x = 19,021,573,513.62
  5. Step 5: Solve for x
    x = 19,021,573,513.62/154,056.50
  6. Step 6: Final answer
    x = 123,471.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.